Git Commands

list of important git commands

1. git init
2. git status
3. git add .
4. git commit
5. git commit -am "COMMIT_MSG_HERE"
6. git log
7. git pull

---

8. git branch -l
9. git branch -D BRANCH_NAME
10. git checkout BRANCH_NAME
11. git checkout -B BRANCH_NAME

---

12. git stash
13. git stash pop
14. git stash push
15. git stash list

---

16. git merge BRANCH_NAME
17. git cherry-pick COMMIT_SHA

---

18. git pull --rebase
19. git pull --no-rebase

---

20. git reset --soft COMMIT_SHA
21. git reset --hard COMMIT_SHA
22. git push --force

Vim Commands

1. gg - Go to the first line of the file
2. G - Go to the last line of the file
3. 5G - Go to line number 5
4. ff - Find file (in some Vim configs, or use / for search)
5. p - Paste after the cursor
6. dd - Delete the current line
7. :w - Save (write) the file
8. :q - Quit Vim
9. :!q - Force quit Vim (discard changes)
10. :set number - Show line numbers in the editor

vim has three modes

1. command mode
2. insert mode
3. extended mode

Github action

setting up basic CI CD pipeline using github action few keypoints to note

1. github action runner
2. branch protection
3. github secrets ${{ secrets.ORG_GITHUB_PACKAGES_READER }}

refer below example

name: PR Build #name of the workflow
on: # the trigger on which to run workflow
  push:  
    branches: [main, "fix/*", "feat/*"]
    paths: 
      - 'frontend/**'
  pull_request:
    branches: [main, "fix/*", "feat/*"]
    paths: 
      - 'frontend/**'
  workflow_dispatch:

env:
  NODE_VERSION: 20

jobs:
  pr-build-api:
    runs-on: ubuntu-latest
    steps:
      - name: 🐙 Checkout code
        uses: actions/checkout@v4

      - name: 🔥 Setup NodeJS
        uses: actions/setup-node@v4
        with:
          registry-url: "https://npm.pkg.github.com"
          always-auth: true
          node-version: ${{ env.NODE_VERSION }}

      - name: 🏗️ Build FrontEnd
        working-directory: ./frontend
        run: |
          npm install
          npm run build

how to run project locally

1. open three terminals
2. in each terminal cd to folder frontend , product-service, user-service
3. run brew services start mongodb/brew/mongodb-community in new terminal
4. run npm install , npm run build and npm run start in each terminal
5. website will be live on http://localhost:3000/

how to install mongoDB on mac

1. brew tap mongodb/brew
2. brew install mongodb-community
3. brew install mongosh
4. brew services start mongodb/brew/mongodb-community

how to install mongoDb on windows

refer

Important Note: If you are running MongoDB in Docker, make sure your local MongoDB service is stopped. Running both at the same time can cause port conflicts and connection issues. brew services stop mongodb/brew/mongodb-community

docker commands

1. docker ps | docker ps -a
2. docker run -e POSTGRES_PASSWORD=password postgres:9.6
3. docker pull redis
4. docker run redis
5. docker run -d redis
6. docker images
7. docker start f32897c3b1c9
8. docker stop f32897c3b1c9

---

9. docker run -p6000:6379 -d redis
10. docker logs older
11. docker run -p6002:6379 -d --name older redis
12. docker exec -it afd05d2c05f6 /bin/bash

---

13. docker pull mongo
14. docker pull mongo-express
15. docker network ls
16. docker network create mongo-network

docker run -d \
-p 27017:27017 \
-e MONGO_INITDB_ROOT_USERNAME=admin \
-e MONGO_INITDB_ROOT_PASSWORD=password \
--name mongodb \
--net mongo-network \
mongo

docker run -d \
-p 8081:8081 \
-e ME_CONFIG_MONGODB_ADMINUSERNAME=admin \
-e ME_CONFIG_MONGODB_ADMINPASSWORD=password \
--net mongo-network \
--name mongo-express \
-e ME_CONFIG_MONGODB_SERVER=mongodb \
mongo-express

19. docker-compose -f docker-compose.yaml up -d
20. docker-compose -f docker-compose.yaml down
21. docker build -t my-prod:1.2 .

---

22. docker system prune -f # Remove all unused containers, networks, images (not just dangling ones), and optionally, volumes
23. docker image prune -a -f # Remove all unused images
24. docker container prune -f # Remove all stopped containers
25. docker rm $(docker ps -a -q) # Remove all stopped containers
26. docker rmi $(docker images -q) # Remove all images

setup docker on ec2

sudo dnf update -y
sudo dnf install docker -y
sudo systemctl start docker
sudo systemctl enable docker
sudo usermod -aG docker $USER
sudo rm /usr/local/bin/docker-compose
sudo curl -L "https://github.com/docker/compose/releases/latest/download/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
sudo chmod +x /usr/local/bin/docker-compose
sudo usermod -aG docker $USER
groups $USER
sudo systemctl restart docker

make sure to open a new cli session after running the above docker install commands

install git on linux 2023

'sudo dnf install git -y'

make sure to login docker on ec2

aws configure aws ecr get-login-password --region us-east-1 | docker login --username AWS --password-stdin 504584570834.dkr.ecr.us-east-1.amazonaws.com

Basic Mongo Shell Commands

Command	Description
show dbs	List all databases
use mydb	Switch to (or create) database mydb
show collections	List all collections in the current database
db.createCollection('users')	Create a new collection named users
db.users.insertOne({ name: 'John', age: 30 })	Insert a single document into users
db.users.insertMany([{ name: 'Alice' }, { name: 'Bob' }])	Insert multiple documents
db.users.find()	Show all documents in users
db.users.find({ name: 'John' })	Find documents with name 'John'
db.users.deleteOne({ name: 'John' })	Delete one document with name 'John'
db.users.deleteMany({})	Delete all documents in users
db.users.updateOne({ name: 'John' }, { $set: { age: 31 } })	Update a document
db.dropDatabase()	Drop the current database
db.users.drop()	Drop the users collection

to create ssh keygen public from pem

ssh-keygen -y -f /Users/rohanbasankar/Downloads/cdacdevops.pem > /Users/rohanbasankar/Downloads/cdacdevops.pub

terraform commands

Command	Description
terraform init	Initialize a Terraform working directory
terraform plan	Show changes that will be made by Terraform
terraform apply	Apply the planned changes to your infrastructure
terraform destroy	Destroy the Terraform-managed infrastructure
terraform validate	Validate the Terraform files for syntax errors
terraform output	Show output values from your Terraform state